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A model to predict the coupled axial torsion properties of ACSR electrical conductors

A simplified strength of material theory for bare ACSR conductors is developed and compared to experimental results

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Abstract

The modeling of ACSR (aluminum-conductor steel-reinforced) electrical conductors for dynamic analysis requires some knowledge of the mechanical properties of the conductor. It was found both experimentally and theoretically, using a simple strength of materials approach, that the axial-torsional behavior of ACSR conductors is highly coupled; i.e., axial motion causes torsional motion and vice versa. Although wind-induced oscillation of ACSR power lines has been observed for years, the importance of axial-torsional coupling has not been generally recognized, nor studied. A simplified mathematical model correlated well with experimental measurements for this type of coupled mechanical behavior. It is hoped that being able to control the amount of coupling through cable design may lead to better control of wind-induced oscillations.

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Authors and Affiliations

  1. Department of Engineering Science and Mechanics, Iowa State University, 50011, Ames, IA

    K. G. McConnell (Professor)

  2. Koehring Corp., 53074, Port Washington, WI

    W. P. Zemke (Design Engineer)

Authors
  1. K. G. McConnell
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  2. W. P. Zemke
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McConnell, K.G., Zemke, W.P. A model to predict the coupled axial torsion properties of ACSR electrical conductors. Experimental Mechanics 22, 237–244 (1982). https://doi.org/10.1007/BF02326388

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  • DOI: https://doi.org/10.1007/BF02326388

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